// support.js
class Container {
    static of (value) {
        return new Container(value)
    }
    constructor (value) {
        this._value = value
    }
    map (fn) {
        return Container.of(fn(this._value))
    }
}
class MayBe {
    static of (x) {
        return new MayBe(x)
    }
    ifNothing () {
        return this._value === null || this._value === undefined
    }
    constructor (value) {
        this._value = value
    }
    map (fn) {
        return this.ifNothing() ? this : MayBe.of(fn(this._value))
    }
}

module.exports = { MayBe, Container }
